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python实现贪吃蛇游戏源码

2020-03-22 12:07 751 查看

本文实例为大家分享了python实现贪吃蛇的具体代码，供大家参考，具体内容如下

import pygame
import sys
import random

SCREEN_X=600
SCREEN_Y=600

class Snake(object):
def __init__(self):
self.direction=pygame.K_RIGHT
self.body = []
for i in range(5):
self.addnode()

def addnode(self):
left, top = (0, 0)
if self.body:
left, top = (self.body[0].left,self.body[0].top)
node = pygame.Rect(left,top,25,25)
if self.direction == pygame.K_RIGHT:
node.left += 25
elif self.direction == pygame.K_LEFT:
node.left -= 25
elif self.direction == pygame.K_UP:
node.top -= 25
elif self.direction == pygame.K_DOWN:
node.top += 25
self.body.insert(0,node)

def delnode(self):
self.body.pop()

def isdead(self):
if self.body[0].x not in range(SCREEN_X):
return True
if self.body[0].y not in range(SCREEN_Y):
return True
if self.body[0] in self.body[1:]:
print('in body')
return True
return False

def move(self):
self.addnode()
self.delnode()

def changeddirection(self,curkey):
LR = [pygame.K_LEFT,pygame.K_RIGHT]
UD = [pygame.K_DOWN,pygame.K_UP]
if curkey in LR+UD:
if (curkey in LR) and (self.direction in LR):
return
if (curkey in UD) and (self.direction in UD):
return
self.direction = curkey

class Food(object):
def __init__(self):
self.rect = pygame.Rect(-25, 0, 25, 25)

def remove(self):
self.rect.x = -25

def set(self):
if self.rect.x == -25:
allpos = []
for pos in range(25,SCREEN_X-25,25):
allpos.append(pos)
self.rect.left = random.choice(allpos)
self.rect.top = random.choice(allpos)
print(self.rect)

def show_text(screen,pos,text,color,font_bold = False,font_size = 60,font_italic = False):
cur_font=pygame.font.SysFont('宋体',font_size)
cur_font.set_bold(font_bold)
cur_font.set_italic(font_italic)
text_fmt = cur_font.render(text,1,color)
screen.blit(text_fmt,pos)

def main():
pygame.init()
screen_size = (SCREEN_X,SCREEN_Y)
screen = pygame.display.set_mode(screen_size)
pygame.display.set_caption('Snake')
clock=pygame.time.Clock()
scores=0
isdead=False

snake=Snake()
food=Food()

while True:
for event in pygame.event.get():

if event.type == pygame.QUIT:
sys.exit()
if event.type == pygame.KEYDOWN:
#print(event)
#pressed_keys = pygame.key.get_pressed()
#if pressed_keys.count(1)>1:
# continue
print(event.key)
snake.changeddirection(event.key)
if event.key == pygame.K_SPACE and isdead:
return main()
screen.fill((255,255,255))
if not isdead:
scores +=1
snake.move()
for rect in snake.body:
pygame.draw.rect(screen,(20,220,39),rect,0)
isdead=snake.isdead()
if isdead:
show_text(screen,(100,200),'you dead!',(227,29,18),False,100)
show_text(screen,(150,260),'press space to try again...',(0,0,22),False,30)

if food.rect == snake.body[0]:
scores +=50
food.remove()
snake.addnode()

food.set()
pygame.draw.rect(screen,(136,0,21),food.rect,0)
show_text(screen,(50,500),'Scores:'+str(scores),(223,223,223))
pygame.display.update()
clock.tick(5)

if __name__ == "__main__":
main()

以上就是本文的全部内容，希望对大家的学习有所帮助

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